Now showing items 1-6 of 6

  • A combined fuzzy AHP-goal programming approach to assembly-line selection 

    Authors:Ayaǧ, Zeki; Özdemir, Rıfat Gürcan
    Publisher and Date:(IOS Press, 2007)
    In mass production assembly-line balancing (ALB) problem has been a critical and repetitive issue for companies for long time. On the other hand equipment selection for stations has also been another important problem at the design stage of an assembly-line system. In this paper both problems are handled simultaneously. Therefore first goal programming (GP) method a well-suited technique is used to develop a preemptive formulation to joint both of the problems when the nature of the problem consists ...

  • A hybrid approach to concept selection through fuzzy analytic network process 

    Evaluating conceptual design alternatives in a new product development (NPD) environment has been one of the most critical issues for many companies which try to survive in the fast-growing world markets. Therefore most companies have used various methods to successfully carry out this difficult and time-consuming evaluation process. Of these methods analytic hierarchy process (AHP) has been widely used in multiple-criteria decision-making (MCDM) problems. But in this study we used analytical ...

  • An integrated approach to evaluating assembly-line design alternatives with equipment selection 

    Authors:Özdemir, Rıfat Gürcan; Ayaǧ, Zeki
    Publisher and Date:(Taylor & Francis Ltd, 2011)
    The design and implementation of assembly-line systems have been critical issues for companies since the first assembly-line was started at the Ford Highland Plant in 1913. From that time onwards most companies have met with various problems at the design and implementation stages of assembly-line systems two of which are the allocation of different work elements to various workstations and the proper equipment selection for workstations. Therefore in this article to overcome both the above-mentioned ...

  • An intelligent approach to ERP software selection through fuzzy ANP 

    Authors:Ayaǧ, Zeki; Özdemir, Rıfat Gürcan
    Publisher and Date:(Taylor & Francis, 2007)
    During the implementations of enterprise resource planning (ERP) systems most companies have experienced some problems one of which is how to determine the best ERP software satisfying their needs and expectations. Because improperly selected ERP software may have an impact on the time required and the costs and market share of a company selecting the best desirable ERP software has been the most critical problem for a long time. On the other hand selecting ERP software is a multiple-criteria ...

  • An intelligent approach to machine tool selection through fuzzy analytic network process 

    Authors:Ayaǧ, Zeki; Özdemir, Rıfat Gürcan
    Publisher and Date:(Springer, 2011)
    In this study we utilize analytic network process (ANP) a more general form of AHP for justifying stand-alone machine tools out of available alternatives in market due to the fact that AHP cannot accommodate the variety of interactions dependencies and feedback between higher and lower level elements. However due to the vagueness and uncertainty on judgments of a decision-maker the crisp pair wise comparison in the conventional ANP seems to be insufficient and imprecise to capture the right judgments ...

  • Evaluating machine tool alternatives through modified TOPSIS and alpha-cut based fuzzy ANP 

    Authors:Ayaǧ, Zeki; Özdemir, Rıfat Gürcan
    Publisher and Date:(Elsevier Science Bv, 2012)
    The problem of machine tool selection among available alternatives has been critical issue for most companies in fast-growing markets for a long time. In the presence of many alternatives and selection criteria the problem becomes a multiple-criteria decision making (MCDM) machine tool selection problem. Therefore most companies have utilized various methods to successfully carry out this difficult and time-consuming process. In this work both of the most used MCDM methods the modified TOPSIS and ...